Lithium Iron Phosphate 36V 20AH Clydesdale Edition battery with a high current battery management system (BMS) for ebike and other light electric vehicles - Lithium Iron Phosphate (LiFePO4) batteries are about as cost effective as lithium batteries can get. With a cycle-life of 1500-2000 recharge cycles and a weight of 15 lbs, this amazing piece of technology can power an ebike up to 2160 watts.